| The fifth-generation mobile communication technology(5G)is currently playing a significant role in the digitization,intelligence,and networking processes in all walks of life in conjunction with the development of technologies such as the Internet of Things,artificial intelligence,and big data.However,the current 5G network has discontinuous coverage,poor coverage performance,insufficient uplink rate,resulting in the 5G network being unable to meet the growing demand for high-speed communications and Io T-based applications.In order to accelerate the deployment of 5G industries and achieve the vision of 5G empowering thousands of industries,enhancing the communication performance of 5G must become an urgent research problem and research hotspot for both domestic and international researchers.This paper presents a solution for these problems by combining the multipath data transmission protocol(MPTCP)with 5G technology in order to aggregate 5G communication links from different operators in order to improve 5G transmission bandwidth,network services,and robustness in industrial settings.This thesis contains the following research work and contents:(1)The paper summarizes the current development status of multi-path transmission technology and the key technologies of 5G communications,as well as research status and development trends.An analysis of the transmission principle and function of the multipath data transmission protocol is presented in this paper in relation to its design goal and the actual scene of 5G industry applications.Based on this,the software and hardware design scheme for the 5G multipath data transmission system is developed,as well as the user interface design,LAN data collection,and 5G multilink data transmission.(2)The schematic and PCB circuit diagrams of the 5G multipath data transmission system are created using Altium Designer software.The system platform takes the I.MX6 ULL processor as the core,and is equipped with a 512 MB DDR memory module,a 512 MB Nand Flash storage module core board,and also includes a 5G communication module,Ethernet,Wi-Fi,USB serial port,LCD display,power supply.Separating the main board from the bottom board allows the system platform to have low cost and strong scalability.Following that,advanced design software analyzes signal integrity,checks signal routing rationality,and matches key signal impedances.As a final step,the circuit board for the system hardware has been produced.(3)After the hardware platform has been completed,configure the operating environment in accordance with the I.MX6 ULL processor,install and build the Ubuntu-based root file system,install U-boot,MPTCP-Linux kernel,and complete the device tree based on the board-level hardware.Then,the visual display interface of the system is designed.Finally,5G multipath data transmission system functional modules are tested and transmission performance is verified.As a result of the testing,it has been found that the 5G multi-path data transmission system has an improved transmission rate than a single path,and that the security,stability,and link aggregation effects of the established target can be achieved. |
